/Engine/Plugins/Editor/GameplayTagsEditor/Source/GameplayTagsEditor/Public/SGameplayTagWidget.h
Given a property handle, try and extract the editable tag containers from within it (when dealing with a struct property of typeFGameplayTagContainer).
True if it was possible to extract containers (even if no containers were extracted), or false otherwise.
static bool GetEditableTagContainersFromPropertyHandle ( const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [IPropertyHandle](API\Editor\PropertyEditor\IPropertyHandle) > & PropHandle, [TArray](API\Runtime\Core\Containers\TArray)< [FEditableGameplayTagContainerDatum](API\Plugins\GameplayTagsEditor\SGameplayTagWidget\FEditableGamepla-) > & OutEditableContainers )